Riveting machine



y 0- 'r. GLB'URNETT 1,760,743

RIVETING MACHINE Filed Nov. 26, 1928 Y INVENTOR ATTORNEY 7&1774. Bur/Yeti Patented May 27, 1930 UNITED STATES TOM G. BURNETT, OF SOCIAL HILL, ARKANSAS RIVE'IING MACHINE Application filed November 26, 1928. Serial No. 322,065.

' This. invention relates to improvements in riveting machines and which embodies among other characteristics a foot operated actuating lever whereby the hands may be left free tohold the. work in place.

Another object of the invention comprises a rivet retaining arm.

An. additional object of the invention contemplates a pressurebar actuated by the lever.

A further object. of the invention resides in the provision of an arm adapted for con nection with the pressure bar to regulate the. gap between the working ends of the rivet retaining arm and pressure bar.

More specifically stated the foot actuated lever is. adapted for connection with a spring to normally hold the working ends of the pressure bar and rivet retaining arm spaced apart.

With the above and other objects in view, the invention further consists of the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended. claims.

In the drawing Figure l is a side elevationof the. invention as set up for use.

Figure 2 is. a top plan view thereof. 7

Figure 3 is a vertical sectional view taken on line 33 of Figure 1.

Figure 4 is a lon itudinal sectional view taken on line 4-l 0 Figure 1.

Figure. 5 is a perspective view of the rivet retaining sleeve per se.

Referring to the drawing in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates a leg adapted for connection with the depending attaching portion 11 of an arm 12 twisted and disposed at right angles thereto in the manner illustrated in Figure 1 of the drawing. The uppermost end of the leg ter-- minates to provide an outwardly projecting offset extremity 13 oppositely disposed with relation to the arm 12 and located an appreciable distance below the plane thereof.

Angle brackets 14,. secured to the joined portions; of the leg 10. and attaching portion 11 ofthe;.am1 12,.are secured to the-upper side of a table or bench, such as indicated at 15, whereby the invention may be disposed in the Figure 1 position.

The particular application of the invention upon a table or bench facilitates the placing of a tire casing upon a table and about the invention in such manner that its weightis wholly supported by the table.

A pressure bar 16 pivotally and eccentrically mounted, as indicated at 17 upon the twisted portion of the arm 12 also terminates to provide a twisted horizontally disposed extremity 18.

A plate member 19, pivotally mounted for lateral swinging movement, as indicated at 20, upon the, under side of the horizontally disposed twisted extremity 18 of the pressure bar 16, projects at its opposite end an appreciable distance beyond the extremity of the portion 18 and is provided with an opening 21 adapted to accommodate the shanks of rivets. An elongated ring 23, slidably mounted upon the arm 12 and pressure bar 16, is adapted for selective reception within any one of a plurality of pocket portions 24 in the upper edge of the arm12 to limit the space between the working ends of the leg and pressure bar.

The actuating means for the machine is in the nature of a foot lever 25 having an offset foot engaging portion 26 upon its lowermost end and an elongated longitudinally disposed adjusting slot 27 within its opposite end. The slot 27 facilitates adjustment of the foot lever 25 upon one end of the downwardly and outwardly obliquely disposed extremities 28 of a fulcrum lever 29 pivoted, as at 80, upon the opposite sidesof the leg 10 and projected rearwardly thereof toward the yoke-endiil thereof; 9

The innermost end of the pressure bar 16 is projected within the yoke end 31 of the fulcrum lever 29 and adapted for sliding action against a sleeve member 32 revolvably mounted between the legs thereof. A retractile spring 33, having connection at its upper most end with the fulcrum lever 29, is passed through an opening 34 in the table or bench 15 for connection with the innermost end of a bolt member 35 passed through the 1owermost end of the leg 10 and attaching portion 11 for the arm 12.

The present invention was primarily designed for use in the joining of used tire casing sections. As generally known, the socalled two in one tire is made up of two tires. A tire having good tread and bad beading is employed for the tread portion of the tire and its beading is severed therefrom. Another tire having good beading but little or no tread is placed within the remaining casing of the tread section and the beading therefor is projected beyond the severed portions thereof. The combined thicknesses of the two side walls are then inserted between the anvil 36, sleeve 37 and the swingably mounted plate 19, whereby rivets may be inserted through the overlapping side wall portions of the two casings.

This is done in the manner illustrated in Figure 2 of the drawing by first inverting a rivet to dispose the head thereof against the upwardly projecting end of an anvil 36 seated at its opposite end upon the upper side and adjacent the outer end of the offset extremity 13 of the arm 12.

The anvil, as manifest from the aforementioned illustration, is held in a vertically disposed position within the bore of a sleeve member 37 vertically and right angularly disposed upon the extremity 13. Said sleeve is cut away to provide a shoulder 38, normally spaced from' the upper surface of the extremity 13. A semi-circular portion 39, carried by the sleeve 37, is projected downwardly therefrom to accommodate the rounded end 10 of the extremity 13 for the arm 12. A retaining element 41 in the nature of a U-shaped clamp carried upon the extremity 13 of the arm 12 holds the rounded end 40 thereof within the groove of the semi-circular portion 39.-

A spring finger or leaf, such as indicated at 42, is preferably fixed at its innermost end to the underside of the extremity 13. The lowermost projecting end of the semi-circular portion 39 is seated upon the outwardly projecting end of the spring finger or leaf 42 to normally elevate the shoulder 38 from the upper surface of the extremity 13 as manifest from the illustration of my invention in Figure 1 of the drawing.

Spaced ears 43, depending in parallelism from the end of the semi-circular portion 39, are adapted to straddle the end of the spring finger or leaf 42 substantially as illustrated in Figure 3 of the drawing.

By the arrangement, as mentioned in the foregoing the rivet is held in position but the sleeve 37 will give to facilitate projection of the entire length of the shank therefor through its work.

The swingably mounted plate is then shifted to occupy the Figure 1 position and the foot lever 25 shifted to lower the horizontally disposed portion 18 of the pressure bar 16 and the swingably mounted plate 19 to occupy a position in parallelism with that of the upper side of the offset extremity 13 of the leg 10.

The rivet will puncture the walls of the tire casings and project within the opening 21 in the extremity of the swingably mounted plate 19.

The foot lever is then released and the retractile spring 33 will shift the pressure bar 16 to occupy the Figurel position. An apertured washer is then placed over the projecting end of the rivet. The swingably mounted plate 19 is then shifted upon the pivot pin 20 to occupy a position at right angles to the twisted horizontally disposed end 18 of the pressure bar 16. The foot pedal 25 is again depressed to hold the washer upon the rivet after which a hollow punch is employed to push the washer down upon the shank of the rivet, whereby the latter may be peened to prevent displacement of the tire sections.

At this juncture the ring 23 is shifted rearwardly upon the arm 12 and pressure bar 16 to retain the twisted horizontally disposed arm 18 of the latter in compressed position whereby the operator may stand to one side and mash and peen the end of the rivet projecting through the aperture in the washer.

Although I have shown, described and illustrated my invention as being primarily designed for use in the manufacture of two in one tires, it is obviously understood that the machine could be effectively employed for punching and riveting any other material desired.

The invention is susceptible of various changes in its form, proportions and minor details of construction, and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having thus described the invention, what is claimed is 1. A riveting machine comprising a leg,

a fulcrum bar carried thereby, a foot pedal mounted upon one end of the fulcrum bar, one end of the leg being offset and having a rivet support thereon, an arm having one end connected with said leg, and a pressure bar pivotally mounted upon the arm and having connection at one end with the fulcrum bar.

2. A riveting machine comprising a leg, a fulcrum bar carried thereby, a foot pedal mounted upon one end of the fulcrum bar, one end of the leg being offset and having a rivet retaining sleeve upstanding therefrom, an arm having one end connected with said leg, a pressure bar pivotally'mounted upon the arm and having connection at one end with the fulcrum bar, and means carried by the arm and adapted for Connection with the pressure bar to retain same in position for use.

3. A riveting machine comprising a leg having a rightangularly offset extremity upon one end, a rivet retaining sleeve carried by and upstanding from the offset extremity of said leg, an arm horizontally disposed with relation to said leg and projected in an opposite direction with relation to the offset extremity thereof having a rightangularly twisted attaching portion connected with the leg proper, a fulcrum bar mounted upon the leg, a pressure bar pivotally mounted upon the arm and having one end operatively connected with the fulcrum bar, a plate swingably mounted upon the opposite end of the pressure bar and adapted for cooperative engagement with the rivet retaining sleeve, and a ring carried by the arm adapted for connection with the pressure bar to retain same in position for use.

4. A riveting machine comprising a leg having a rightangularly disposed offset extremity upon one end, a sleeve mounted for reciprocating action upon the end of said extremity, an arm horizontally disposed with relation to said leg and projected in an opposite direction with relation to the extremity thereof having a rightangularly twisted attaching portion connected with the leg proper, a fulcrum bar mounted upon the leg, a pressure bar pivotally mounted upon the arm and having one end operatively connected with the fulcrum bar, a plate swingably mounted upon the opposite end of the pressure bar having an opening therein to accommodate the shanks of rivets in the sleeve, and a ring carried by the arm adapted for connection with the pressure bar to retain same in position for use.

5. A riveting machine comprising a leg having a rightangularly disposed offset extremity upon one end, a rivet retaining sleeve mounted for reciprocating action upon the outermost end of said extremity, a semi-circular portion carried by and depending from said sleeve, means for retaining said semicircular portion upon the extremity of the leg, an arm horizontally disposed with relation to said leg and projected in an opposite direction with relation to the extremity thereof having a rightangularly twisted attaching portion connected with the leg proper, a fulcrum bar mounted upon the leg, a pressure bar pivotally mounted upon the arm and having one end operatively connected with the fulcrum bar, a plate swingably mounted upon the opposite end of the pressure bar and adapted for cooperative engagement with the rivet retaining sleeve, and a ring carried by the arm adapted for connection with the pressure bar to retain same in position for use.

6. A riveting machine comprising a leg having a rightangularly disposed oflset extremity upon one end, a rivet retaining sleeve slidably mounted for reciprocating action upon the extremity, a semi-circular portion carried by and depending from said sleeve, a clamping band carried upon the extremity of the arm to prevent displacement of the semi-circular portion, a rivet support seated upon the upper side of the ofiset end of the leg within the sleeve and engageable with the head of a rivet, an arm horizontally disposed with relation to said leg and projected in an opposite direction with relation to the extremity thereof having a rightangularly twisted attaching portion connected with the leg proper, a fulcrum bar mounted upon the leg, a pressure bar pivotally mounted upon the arm and having one end operatively connected with the fulcrum bar, a plate swingably mounted upon the opposite end of the pressure bar and adapted for cooperative engagement with the rivet retaining sleeve, and a ring carried by the arm adapted for connection with the pressure bar to retain same in position for use.

7. A riveting machine comprising a leg having a rightangularly disposed oflset extremity upon one end, a rivet retaining sleeve arranged for reciprocating action upon the end of the offset extremity, a semi-circular portion carried by and depending from the sleeve, a U-shaped retaining plate mounted upon the end of the extremity to prevent displacement of the semi-circular portion dur; ing the reciprocating action of said sleeve, a rivet support disposed within the sleeve and having contacting engagement at the lowermost end thereof with the upper side of said extremity and seating the heads of rivets upon its opposite end, a spring ele ment carried by the offset extremity to resiliently seat the sleeve and semi-circular portion, an arm horizontally disposed with relation to said leg and projected in an opposite direction with relation to the extremity thereof having a rightangularly twisted attaching portion connected with the leg proper, a fulcrum bar mounted upon the leg, a pressure bar pivotally mounted upon the arm and having one end operatively connected with the fulcrum bar, a plate swingably mounted upon the opposite end of the pressure bar and adapted for cooperative engagement with the rivet retaining sleeve, and a ring carried by the arm adapted for connection with the pressure bar to retain same in position for use. 1

8. A riveting machine comprising a leg, a fulcrum bar carried thereby having its lowermost extremity obliquely disposed with relation to the uppermost end thereof and including a foot pedal thereon, an arm carried by the leg, a pressure bar tiltably mounted upon the arm, and a rivet support arranged upon the leg for cooperative use with the adjacent end of the pressure bar, said fulcrum bar having sliding operative connection with the opposed end of the pressure bar.

In testimony whereof I aflix my signature.

TOM G. BURNETT. 

